Block planer



June 12, .1923.

o. 5. 000K ET AL BLOCK PLANER Filed Nov. 21, 1921 3 Sheets-Sheet} June 12, 1923.

Q. S. COOK ET AL BLOCK PLANER 1921 3 Sheets-Sheet 2 U. Ormz 0760011 June 12, 1923.

O. S. COOK ET.AL

BLOCK PLANER 1921 3 Sheets-Sheet 5 Filed Nov. 21

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Patented June 12, i923.

mm: s. cooK AND HENRY A. GALE, or EI'IGHBURG, MASSACHUSETTS.

BLOCK PLANER.

Application filed November 21, 1921. Serial No. 516,561

planing the block of asole or other leather cutting machine. The principal objects, of the invention are to provide asimple planing device adapted' to be conveniently mounted on a sOle or other die cutting machine in such position as to ensure the dressing offof' the, top of the block in aperfect plane to prov-idea simple and practical;

frame for the rotary cutters so arranged and mounted that it can be moved across the blockby hand and; removed from the sole cutting machine without danger of getting it out? of position to'dress off the top, of the block-in-an accurate manner; and to provide improvements in the way of supporting the frame. or: carriage and other features of construction.

Referenceis to be hadto the accompanying drawings in which Fig. 11 is a front view of a sole cutting machine showing preferred embodiment of this inventionapplied thereto.

Fig. 2 is a transverse sectional view on the line 22"ofFig. 1 showing .the planer in elevation;-and

Fig; 3 is a plan of the planer supporting frame removed from the sole cutting machine I have'shown the invention as applied to a leather cutting machine 10, having a block 11 composed of pieces of wood arranged with the grainvertical and held in position on the bed of the machine in any of the ordinary. ways.

The machine also is provided with the usual beam 12. In operation the-leather is spread on the topof the block and the dies arranged onvthe leather. The operation of the machinejis to force the-dies throughthe leather against the surface of the block by bringing the block; and the beam 12 toward each other by the movement of either one, as may be desired Naturally this is severe service for the upper surface of the block and it; becomes-scarred and worn unevenly.

, Heretofore,-.-the ordinary method of dressingroffthe worn surface. was to cut it down by means of rotary tools supported and manipulated by hand, but rotated by power. The natural tendency of such a device was to emphasize any depressions that might exis; in the face of the block and there was no means except the judgment and skill ofth operator to cause them to cut in a plane and retain the original flat surface of the blocks.

This invention is designed to'take advantage of certain features of the leather cutting machine and use them to correct deficiencies of. the ordinary block dressing device above de scribed.

It will-be observed, of'course, that the bot-e, tom of the beam12 is in a planewhich necese sarily is parallel with the upper surface of the block, when the block is new. I takeadvantage of this fact: and use the beam for supporting the planer. The planer comprises a frame made up of four round or other shaped rodsle and 13, connected at. their corners to form a square supporting frame. The twofside members 14 of this frame are provided with means for; attachingthe frame fo'the beam. This comprises on each side a stationary jaw 15, and'a movable jaw- 16. The stationary ,jaw can be pinned by the means of pins 17 in anyone of a" number of positions on the side member 14*. This. is provided for by the perforations 18, for receiving this pin. Each ofthe jaws 16, is mounted on a support 19 and has an adjustable screw 21, which is adapted. to bear on the side member 14: to force the jaw down and clamp it in position. The two jaws 15 and 16 are adapted to engage on opposite flanges of the beam 12 and? the frame in'this way is secured on said beam in any set position along it. with its upper; surface in closecontact with the bottom surface of the beam; p

Theend members 13'of the frame are provided with transverse teeth 23 on the bottom, so, that they constitute racks. Arranged to slide on these racks are a pair of brackets 24, each having a pair-of opposite perforations resting on-the smooth, continuous convexnpper surfaces of the rods 18, whichconstitute guides. Mountedfin bearingsin oneend .of each bracket, is" a shaft 25 and extending clear across. The endof this shaft is squared off andprovided withla, handle or crank for turning it. The shaft is also provided with two pinions 26, fixed to it at each end and meshing with the racks. V The rotation of the shaft 25 thus moves theqtwo brackets 24 and everything carried by them along the frame. Stops 29 are provided for .limiting this motion. The two brackets 24 are connected bycross pieces 28. The four pieces 24' and 28 constitute 'a sidew se movable frame.

The cross pieces 28 are provided with ways 27 in which is mounted a slide 30; This slide is inthe form of a plate, the opposite edges of which rest on and slide along the Ways as will appear.

Depending from this plate is an electric motor 31, the casing of whichis secured to the bottom of the plate. The motor has a shaft 32extending through it, mounted in suitable bearings at the endsof the casing and on one, or preferably both, ends of the shaft is a Lamson saw 33. These two saws are designed for planing offthe'top of the block ll.

On the slide is supported a casing 35 I for a fan 34. This fanis provided. with a:

shaft 36,011 which the fan itself is mounted and onwhich is a pulley 37. This shaft 36 receives its power'from the shaft 32 through a pulley 38 thereon and belt 39. The fan is 'providedwith an inlet pipe 40 divided I into two branches, each having an. inlet opening41,jlocated adjacent to the bottom of the respective saws 33. Sawdust, or the like, is brought in through the pipe 40 and into'the fan and is discharged through the outlet 42. The motor casing is also provided withahandle rigidly fixed to and depending from it.

It is to be observed that the frame can bev mounted any where along the beam 1 2,

' andjthat, when fixed, the saw carriage 24 28, can be, moved along this frame. in the same direction, that is, longitudinally of the beam. This provides for the ordinary adjustment in that direction. In this-device wthe motor is started and the slide 30 is moved along'the ways 27 from front to back or from back to front, to plane the top of the block through-outan areathe width of thesaw and extending clear across the block.

i Thenthe' shaft 25 is turned to shift; the saw carriage along the necessary distance and the slide is then moved back andforth again.

This is repeated until thearea covered by therange of adjustments between the two stops29, has all beenplaned. This is so designed that each one of the sawswill cover more than'halfthe distance between thestops, so that no second setting is required for any area within thelimits of the operation of thecarriage. When this much isdone the WllOlQ outside frame 14-13 is moved along the-beam by releasing the two jaws'16,and then sliding it along by hand and finally tightening these'jaws. thef above described operationis repeated; It will be" seen that the beam 12 itself, the'lower surface of which is plane, conse- Then quently serves as a guide for the saws,con-

sequently, no matter whether the block is .worn or not, or how unevenly it may be worn on top, the result is a perfectlyplane surface, provided the distance between the beam and block is adjusted so as to enable the saws tocut deep enough. The human elementis entirely done away with so far as the contour of the plane surface is concerned and an accurate result is secured. Thesur face of the block is necessarily exactly parallel with the lower surface of the beam. 1 All necessary adjustments are provided forand the motor slidewithits saws and fan can be removedfrom the rest of the frame by pulling it out through the ends of the ways 27, by means of the handle 45. As this relieves the supporting frame of'a good part ofits weight, thisis usually done when it is.desired to remove the device from the cutting machine, although the =wholev device can be at it,

removed as a unit if desired. I Although we have illustrated scribed only a single form of the invention and shown it as applied to only one type of leather cutting machine, we are aware of the fact that modifications-can'be made therein by any person skilled in the art, without -'departingfrom the scope of the invention-as expressed in the claims. Therefore, "we do: not wish to be limited to all the details of, construction herein shown and described,"

but what we claim is z r '1. The combination with a leather cutting machine having a block for supporting leather with the dies "on it and a beam at the top parallel with the block for engaging the tops of the cutting dies, of a frame adapted to be mounted between the beam and the block in any desired position along the beam, a carriage slidable on said frame cured to the bottom of'the beam, aslide movable transversely on the' frame across the machine over the block, ajhorizontal' shaftcarried by the slide, a cutting saw having an interrupted cylindrical surface fixed on saidflshaft, and means on the slide' for rotating the saw. p 1 g 3. The combination with "a leather cutting machine having a block and a beam',of 'a frame mounted on said beam"-'having end members provided with teeth along the 'bot-' tom surface constituting a rack located at; the front and back of the beam, a carriage supported by the end members and -'slidable along them, a shaft extending across the carriage and having pinions meshing with said racks, whereby when the shaft is turned the carriage will move along the racks, means for turning the shaft by hand, and means supported by said carriage for planing off the top of said block.

4:. The combination with a leather cutting machine having a block and a beam, of a frame on the lower surface of said beam and having parallel ways extending across the machine over the block, a slide supported gag by said ways having a handle by which said slide can be moved back and forth, a motor carried by said slide having a shaft projecting beyond the slide at both ends, and a pair of Lamson saws on the ends of said illlaft for planing off the top surface of said ock.

In testimony whereof we have hereunto 2o afiixed our signatures.

ORNAN S. COOK. HENRY A GALE. 

